99128648052 has 72 divisors (see below), whose sum is σ = 286919587136. Its totient is φ = 28268279424.

The previous prime is 99128648029. The next prime is 99128648053. The reversal of 99128648052 is 25084682199.

It is a happy number.

99128648052 is a `hidden beast` number, since 9 + 91 + 28 + 6 + 480 + 52 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 99128648052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99128648053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244273 + ... + 507864.

Almost surely, 2^99128648052 is an apocalyptic number.

It is an amenable number.

99128648052 is an abundant number, since it is smaller than the sum of its proper divisors (187790939084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99128648052 is a wasteful number, since it uses less digits than its factorization.

99128648052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752677 (or 752672 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 99128648052 in words is "ninety-nine billion, one hundred twenty-eight million, six hundred forty-eight thousand, fifty-two".